The college ______ 7 departments, 4 institutes, and Teaching Division of Basic Computer Science and Basic Lab Center.
The worker can make chairs ____ wood, and also can make paper ____ wood.
The teacher is writing ____ a piece of chalk on the blackboard while the students are writing ____ink in exercise books.
—You know. Bob is a little slow ____ understanding, so… — So I have to be patient ______ him.
We were just about ready to leave _____ it started to snow.
_____ the government agrees to give extra money , the theatre will have to close.